./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec4_product52.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/product-lines/minepump_spec4_product52.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4a7d01a18e8eb658e3fdab12793134365cb1bc41 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 16:18:58,915 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:18:58,918 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:18:58,955 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:18:58,956 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:18:58,959 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:18:58,960 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:18:58,965 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:18:58,967 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:18:58,971 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:18:58,972 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:18:58,976 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:18:58,976 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:18:58,978 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:18:58,980 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:18:58,983 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:18:58,984 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:18:58,984 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:18:58,987 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:18:58,992 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:18:58,993 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:18:58,994 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:18:58,995 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:18:58,997 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:18:59,002 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:18:59,003 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:18:59,003 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:18:59,005 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:18:59,005 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:18:59,006 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:18:59,006 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:18:59,007 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:18:59,009 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:18:59,009 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:18:59,010 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:18:59,010 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:18:59,011 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:18:59,012 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:18:59,012 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:18:59,013 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:18:59,014 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:18:59,018 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:18:59,040 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:18:59,045 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:18:59,045 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:18:59,046 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:18:59,047 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:18:59,047 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:18:59,047 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:18:59,047 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:18:59,047 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:18:59,048 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:18:59,048 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:18:59,048 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:18:59,048 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:18:59,049 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:18:59,050 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:18:59,050 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:18:59,050 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:18:59,050 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:18:59,050 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:18:59,051 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:18:59,058 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:18:59,058 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:18:59,059 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:18:59,059 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:18:59,059 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:18:59,059 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:18:59,059 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:18:59,060 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:18:59,060 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:18:59,061 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:18:59,061 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:18:59,061 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:18:59,062 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:18:59,062 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a7d01a18e8eb658e3fdab12793134365cb1bc41 [2021-08-27 16:18:59,368 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:18:59,385 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:18:59,387 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:18:59,388 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:18:59,389 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:18:59,390 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec4_product52.cil.c [2021-08-27 16:18:59,444 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52e235b6e/c2eff021678043508c82d4f92f1d1a3e/FLAGb7c0b4b51 [2021-08-27 16:18:59,934 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:18:59,935 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product52.cil.c [2021-08-27 16:18:59,948 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52e235b6e/c2eff021678043508c82d4f92f1d1a3e/FLAGb7c0b4b51 [2021-08-27 16:19:00,250 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52e235b6e/c2eff021678043508c82d4f92f1d1a3e [2021-08-27 16:19:00,253 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:19:00,258 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:19:00,261 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:19:00,262 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:19:00,265 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:19:00,268 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:19:00" (1/1) ... [2021-08-27 16:19:00,269 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a3f489 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:19:00, skipping insertion in model container [2021-08-27 16:19:00,270 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:19:00" (1/1) ... [2021-08-27 16:19:00,276 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:19:00,325 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:19:00,598 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product52.cil.c[18107,18120] [2021-08-27 16:19:00,600 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:19:00,616 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:19:00,662 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product52.cil.c[18107,18120] [2021-08-27 16:19:00,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:19:00,678 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:19:00,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:19:00 WrapperNode [2021-08-27 16:19:00,679 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:19:00,680 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:19:00,680 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:19:00,680 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:19:00,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:19:00" (1/1) ... [2021-08-27 16:19:00,698 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:19:00" (1/1) ... [2021-08-27 16:19:00,730 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:19:00,731 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:19:00,731 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:19:00,731 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:19:00,738 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:19:00" (1/1) ... [2021-08-27 16:19:00,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:19:00" (1/1) ... [2021-08-27 16:19:00,743 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:19:00" (1/1) ... [2021-08-27 16:19:00,743 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:19:00" (1/1) ... [2021-08-27 16:19:00,751 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:19:00" (1/1) ... [2021-08-27 16:19:00,757 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:19:00" (1/1) ... [2021-08-27 16:19:00,759 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:19:00" (1/1) ... [2021-08-27 16:19:00,763 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:19:00,764 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:19:00,764 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:19:00,764 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:19:00,765 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:19:00" (1/1) ... [2021-08-27 16:19:00,770 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:19:00,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:19:00,791 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 16:19:00,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-08-27 16:19:00,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:19:00,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:19:00,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:19:00,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:19:01,638 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:19:01,639 INFO L299 CfgBuilder]: Removed 162 assume(true) statements. [2021-08-27 16:19:01,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:19:01 BoogieIcfgContainer [2021-08-27 16:19:01,641 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:19:01,641 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:19:01,642 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:19:01,644 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:19:01,645 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:19:01,645 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:19:00" (1/3) ... [2021-08-27 16:19:01,646 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3655c5f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:19:01, skipping insertion in model container [2021-08-27 16:19:01,646 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:19:01,646 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:19:00" (2/3) ... [2021-08-27 16:19:01,646 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3655c5f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:19:01, skipping insertion in model container [2021-08-27 16:19:01,646 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:19:01,647 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:19:01" (3/3) ... [2021-08-27 16:19:01,648 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec4_product52.cil.c [2021-08-27 16:19:01,691 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:19:01,691 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:19:01,691 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:19:01,692 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:19:01,692 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:19:01,692 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:19:01,692 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:19:01,692 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:19:01,707 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 116 states, 115 states have (on average 1.5391304347826087) internal successors, (177), 115 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:19:01,731 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 75 [2021-08-27 16:19:01,731 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:19:01,731 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:19:01,737 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:19:01,737 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:19:01,737 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:19:01,737 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 116 states, 115 states have (on average 1.5391304347826087) internal successors, (177), 115 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:19:01,744 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 75 [2021-08-27 16:19:01,744 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:19:01,744 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:19:01,746 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:19:01,746 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:19:01,750 INFO L791 eck$LassoCheckResult]: Stem: 104#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(13);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string23.base, #t~string23.offset, 1);call write~init~int(110, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 2 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(102, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(102, #t~string25.base, 2 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 3 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string27.base, #t~string27.offset, 1);call write~init~int(80, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(117, #t~string27.base, 2 + #t~string27.offset, 1);call write~init~int(109, #t~string27.base, 3 + #t~string27.offset, 1);call write~init~int(112, #t~string27.base, 4 + #t~string27.offset, 1);call write~init~int(58, #t~string27.base, 5 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 6 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string29.base, #t~string29.offset, 1);call write~init~int(110, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string31.base, #t~string31.offset, 1);call write~init~int(102, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(102, #t~string31.base, 2 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 3 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string33.base, #t~string33.offset, 1);call write~init~int(32, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 2 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string35.base, #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 1 + #t~string35.offset, 1);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(30);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(9);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(21);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(21);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(30);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(9);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(25);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(30);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(9);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 42#L-1true havoc main_#res;havoc main_#t~ret77, main_~retValue_acc~11, main_~tmp~8;havoc main_~retValue_acc~11;havoc main_~tmp~8; 101#L938true havoc valid_product_#res;havoc valid_product_~retValue_acc~13;havoc valid_product_~retValue_acc~13;valid_product_~retValue_acc~13 := 1;valid_product_#res := valid_product_~retValue_acc~13; 108#L946true main_#t~ret77 := valid_product_#res;main_~tmp~8 := main_#t~ret77;havoc main_#t~ret77; 85#L902true assume 0 != main_~tmp~8; 82#L876true havoc test_#t~nondet38, test_#t~nondet39, test_#t~nondet40, test_#t~nondet41, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 107#L968-1true [2021-08-27 16:19:01,750 INFO L793 eck$LassoCheckResult]: Loop: 107#L968-1true assume !false; 21#L393true assume test_~splverifierCounter~0 < 4; 17#L394true test_~tmp~4 := test_#t~nondet38;havoc test_#t~nondet38; 78#L402true assume !(0 != test_~tmp~4); 7#L402-1true test_~tmp___0~2 := test_#t~nondet39;havoc test_#t~nondet39; 56#L412true assume !(0 != test_~tmp___0~2); 80#L412-1true test_~tmp___2~0 := test_#t~nondet40;havoc test_#t~nondet40; 20#L422true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 39#L430-1true assume !(0 != ~pumpRunning~0); 6#L168true assume !(0 != ~systemActive~0); 5#L175true havoc __utac_acc__Specification4_spec__1_#t~ret79, __utac_acc__Specification4_spec__1_#t~ret80, __utac_acc__Specification4_spec__1_~tmp~9, __utac_acc__Specification4_spec__1_~tmp___0~3;havoc __utac_acc__Specification4_spec__1_~tmp~9;havoc __utac_acc__Specification4_spec__1_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 79#L125true __utac_acc__Specification4_spec__1_#t~ret79 := getWaterLevel_#res;__utac_acc__Specification4_spec__1_~tmp~9 := __utac_acc__Specification4_spec__1_#t~ret79;havoc __utac_acc__Specification4_spec__1_#t~ret79; 49#L968true assume !(0 == __utac_acc__Specification4_spec__1_~tmp~9); 107#L968-1true [2021-08-27 16:19:01,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:19:01,755 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-08-27 16:19:01,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:19:01,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913695218] [2021-08-27 16:19:01,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:19:01,763 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:19:01,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:19:01,993 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:19:02,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:19:02,150 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:19:02,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:19:02,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1670232116, now seen corresponding path program 1 times [2021-08-27 16:19:02,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:19:02,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032781254] [2021-08-27 16:19:02,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:19:02,162 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:19:02,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:19:02,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 16:19:02,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:19:02,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032781254] [2021-08-27 16:19:02,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032781254] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:19:02,230 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:19:02,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:19:02,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908088218] [2021-08-27 16:19:02,234 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:19:02,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:19:02,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:19:02,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:19:02,261 INFO L87 Difference]: Start difference. First operand has 116 states, 115 states have (on average 1.5391304347826087) internal successors, (177), 115 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:19:02,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:19:02,363 INFO L93 Difference]: Finished difference Result 226 states and 330 transitions. [2021-08-27 16:19:02,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:19:02,365 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 226 states and 330 transitions. [2021-08-27 16:19:02,377 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 146 [2021-08-27 16:19:02,386 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 226 states to 212 states and 315 transitions. [2021-08-27 16:19:02,387 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 212 [2021-08-27 16:19:02,388 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 212 [2021-08-27 16:19:02,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 212 states and 315 transitions. [2021-08-27 16:19:02,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:19:02,391 INFO L681 BuchiCegarLoop]: Abstraction has 212 states and 315 transitions. [2021-08-27 16:19:02,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states and 315 transitions. [2021-08-27 16:19:02,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 210. [2021-08-27 16:19:02,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 210 states have (on average 1.4857142857142858) internal successors, (312), 209 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:19:02,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 312 transitions. [2021-08-27 16:19:02,435 INFO L704 BuchiCegarLoop]: Abstraction has 210 states and 312 transitions. [2021-08-27 16:19:02,435 INFO L587 BuchiCegarLoop]: Abstraction has 210 states and 312 transitions. [2021-08-27 16:19:02,435 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:19:02,435 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 210 states and 312 transitions. [2021-08-27 16:19:02,437 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 144 [2021-08-27 16:19:02,437 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:19:02,438 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:19:02,438 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:19:02,438 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:19:02,439 INFO L791 eck$LassoCheckResult]: Stem: 462#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(13);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string23.base, #t~string23.offset, 1);call write~init~int(110, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 2 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(102, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(102, #t~string25.base, 2 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 3 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string27.base, #t~string27.offset, 1);call write~init~int(80, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(117, #t~string27.base, 2 + #t~string27.offset, 1);call write~init~int(109, #t~string27.base, 3 + #t~string27.offset, 1);call write~init~int(112, #t~string27.base, 4 + #t~string27.offset, 1);call write~init~int(58, #t~string27.base, 5 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 6 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string29.base, #t~string29.offset, 1);call write~init~int(110, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string31.base, #t~string31.offset, 1);call write~init~int(102, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(102, #t~string31.base, 2 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 3 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string33.base, #t~string33.offset, 1);call write~init~int(32, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 2 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string35.base, #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 1 + #t~string35.offset, 1);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(30);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(9);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(21);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(21);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(30);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(9);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(25);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(30);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(9);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 416#L-1 havoc main_#res;havoc main_#t~ret77, main_~retValue_acc~11, main_~tmp~8;havoc main_~retValue_acc~11;havoc main_~tmp~8; 417#L938 havoc valid_product_#res;havoc valid_product_~retValue_acc~13;havoc valid_product_~retValue_acc~13;valid_product_~retValue_acc~13 := 1;valid_product_#res := valid_product_~retValue_acc~13; 460#L946 main_#t~ret77 := valid_product_#res;main_~tmp~8 := main_#t~ret77;havoc main_#t~ret77; 454#L902 assume 0 != main_~tmp~8; 452#L876 havoc test_#t~nondet38, test_#t~nondet39, test_#t~nondet40, test_#t~nondet41, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 453#L968-1 [2021-08-27 16:19:02,440 INFO L793 eck$LassoCheckResult]: Loop: 453#L968-1 assume !false; 384#L393 assume test_~splverifierCounter~0 < 4; 375#L394 test_~tmp~4 := test_#t~nondet38;havoc test_#t~nondet38; 376#L402 assume !(0 != test_~tmp~4); 357#L402-1 test_~tmp___0~2 := test_#t~nondet39;havoc test_#t~nondet39; 358#L412 assume !(0 != test_~tmp___0~2); 368#L412-1 test_~tmp___2~0 := test_#t~nondet40;havoc test_#t~nondet40; 499#L422 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 383#L430-1 assume !(0 != ~pumpRunning~0); 489#L168 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret18, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 484#L226 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret17, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 478#L200-1 assume !(0 == ~pumpRunning~0); 477#L175 havoc __utac_acc__Specification4_spec__1_#t~ret79, __utac_acc__Specification4_spec__1_#t~ret80, __utac_acc__Specification4_spec__1_~tmp~9, __utac_acc__Specification4_spec__1_~tmp___0~3;havoc __utac_acc__Specification4_spec__1_~tmp~9;havoc __utac_acc__Specification4_spec__1_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 476#L125 __utac_acc__Specification4_spec__1_#t~ret79 := getWaterLevel_#res;__utac_acc__Specification4_spec__1_~tmp~9 := __utac_acc__Specification4_spec__1_#t~ret79;havoc __utac_acc__Specification4_spec__1_#t~ret79; 474#L968 assume !(0 == __utac_acc__Specification4_spec__1_~tmp~9); 453#L968-1 [2021-08-27 16:19:02,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:19:02,441 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-08-27 16:19:02,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:19:02,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285959442] [2021-08-27 16:19:02,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:19:02,442 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:19:02,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:19:02,497 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:19:02,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:19:02,573 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:19:02,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:19:02,574 INFO L82 PathProgramCache]: Analyzing trace with hash -1415980246, now seen corresponding path program 1 times [2021-08-27 16:19:02,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:19:02,574 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077170417] [2021-08-27 16:19:02,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:19:02,574 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:19:02,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:19:02,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 16:19:02,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:19:02,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077170417] [2021-08-27 16:19:02,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077170417] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:19:02,626 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:19:02,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:19:02,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493375122] [2021-08-27 16:19:02,626 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:19:02,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:19:02,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:19:02,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:19:02,629 INFO L87 Difference]: Start difference. First operand 210 states and 312 transitions. cyclomatic complexity: 105 Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:19:02,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:19:02,768 INFO L93 Difference]: Finished difference Result 293 states and 412 transitions. [2021-08-27 16:19:02,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:19:02,769 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 293 states and 412 transitions. [2021-08-27 16:19:02,771 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 207 [2021-08-27 16:19:02,773 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 293 states to 293 states and 412 transitions. [2021-08-27 16:19:02,773 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 293 [2021-08-27 16:19:02,774 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 293 [2021-08-27 16:19:02,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 293 states and 412 transitions. [2021-08-27 16:19:02,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:19:02,775 INFO L681 BuchiCegarLoop]: Abstraction has 293 states and 412 transitions. [2021-08-27 16:19:02,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states and 412 transitions. [2021-08-27 16:19:02,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2021-08-27 16:19:02,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 293 states have (on average 1.4061433447098977) internal successors, (412), 292 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:19:02,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 412 transitions. [2021-08-27 16:19:02,784 INFO L704 BuchiCegarLoop]: Abstraction has 293 states and 412 transitions. [2021-08-27 16:19:02,784 INFO L587 BuchiCegarLoop]: Abstraction has 293 states and 412 transitions. [2021-08-27 16:19:02,784 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:19:02,784 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 293 states and 412 transitions. [2021-08-27 16:19:02,785 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 207 [2021-08-27 16:19:02,786 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:19:02,786 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:19:02,786 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:19:02,786 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:19:02,787 INFO L791 eck$LassoCheckResult]: Stem: 985#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(13);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string23.base, #t~string23.offset, 1);call write~init~int(110, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 2 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(102, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(102, #t~string25.base, 2 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 3 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string27.base, #t~string27.offset, 1);call write~init~int(80, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(117, #t~string27.base, 2 + #t~string27.offset, 1);call write~init~int(109, #t~string27.base, 3 + #t~string27.offset, 1);call write~init~int(112, #t~string27.base, 4 + #t~string27.offset, 1);call write~init~int(58, #t~string27.base, 5 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 6 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string29.base, #t~string29.offset, 1);call write~init~int(110, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string31.base, #t~string31.offset, 1);call write~init~int(102, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(102, #t~string31.base, 2 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 3 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string33.base, #t~string33.offset, 1);call write~init~int(32, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 2 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string35.base, #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 1 + #t~string35.offset, 1);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(30);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(9);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(21);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(21);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(30);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(9);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(25);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(30);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(9);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 928#L-1 havoc main_#res;havoc main_#t~ret77, main_~retValue_acc~11, main_~tmp~8;havoc main_~retValue_acc~11;havoc main_~tmp~8; 929#L938 havoc valid_product_#res;havoc valid_product_~retValue_acc~13;havoc valid_product_~retValue_acc~13;valid_product_~retValue_acc~13 := 1;valid_product_#res := valid_product_~retValue_acc~13; 981#L946 main_#t~ret77 := valid_product_#res;main_~tmp~8 := main_#t~ret77;havoc main_#t~ret77; 971#L902 assume 0 != main_~tmp~8; 968#L876 havoc test_#t~nondet38, test_#t~nondet39, test_#t~nondet40, test_#t~nondet41, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 969#L968-1 [2021-08-27 16:19:02,787 INFO L793 eck$LassoCheckResult]: Loop: 969#L968-1 assume !false; 1013#L393 assume test_~splverifierCounter~0 < 4; 1008#L394 test_~tmp~4 := test_#t~nondet38;havoc test_#t~nondet38; 1009#L402 assume !(0 != test_~tmp~4); 1003#L402-1 test_~tmp___0~2 := test_#t~nondet39;havoc test_#t~nondet39; 1004#L412 assume !(0 != test_~tmp___0~2); 966#L412-1 test_~tmp___2~0 := test_#t~nondet40;havoc test_#t~nondet40; 890#L422 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 889#L430-1 assume !(0 != ~pumpRunning~0); 864#L168 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret18, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 865#L226 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret17, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 895#L200-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret36, isHighWaterLevel_~retValue_acc~6, isHighWaterLevel_~tmp~2, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~6;havoc isHighWaterLevel_~tmp~2;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 896#L133-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 920#L138-1 isHighWaterLevel_#t~ret36 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~2 := isHighWaterLevel_#t~ret36;havoc isHighWaterLevel_#t~ret36; 921#L328-3 assume 0 != isHighWaterLevel_~tmp~2;isHighWaterLevel_~tmp___0~0 := 0; 978#L328-5 isHighWaterLevel_~retValue_acc~6 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~6; 923#L334-1 processEnvironment__wrappee__highWaterSensor_#t~ret17 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~0 := processEnvironment__wrappee__highWaterSensor_#t~ret17;havoc processEnvironment__wrappee__highWaterSensor_#t~ret17; 924#L204-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0); 946#L175 havoc __utac_acc__Specification4_spec__1_#t~ret79, __utac_acc__Specification4_spec__1_#t~ret80, __utac_acc__Specification4_spec__1_~tmp~9, __utac_acc__Specification4_spec__1_~tmp___0~3;havoc __utac_acc__Specification4_spec__1_~tmp~9;havoc __utac_acc__Specification4_spec__1_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 1018#L125 __utac_acc__Specification4_spec__1_#t~ret79 := getWaterLevel_#res;__utac_acc__Specification4_spec__1_~tmp~9 := __utac_acc__Specification4_spec__1_#t~ret79;havoc __utac_acc__Specification4_spec__1_#t~ret79; 1019#L968 assume !(0 == __utac_acc__Specification4_spec__1_~tmp~9); 969#L968-1 [2021-08-27 16:19:02,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:19:02,787 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-08-27 16:19:02,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:19:02,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490860114] [2021-08-27 16:19:02,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:19:02,788 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:19:02,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:19:02,818 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:19:02,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:19:02,848 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:19:02,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:19:02,849 INFO L82 PathProgramCache]: Analyzing trace with hash 890409558, now seen corresponding path program 1 times [2021-08-27 16:19:02,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:19:02,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158085305] [2021-08-27 16:19:02,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:19:02,850 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:19:02,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:19:02,854 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:19:02,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:19:02,860 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:19:02,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:19:02,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1346480752, now seen corresponding path program 1 times [2021-08-27 16:19:02,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:19:02,861 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472521411] [2021-08-27 16:19:02,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:19:02,861 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:19:02,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:19:02,887 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:19:02,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:19:02,938 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:19:43,534 WARN L207 SmtUtils]: Spent 40.16 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-08-27 16:20:25,836 WARN L207 SmtUtils]: Spent 19.88 s on a formula simplification that was a NOOP. DAG size: 433 [2021-08-27 16:20:25,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:20:25 BoogieIcfgContainer [2021-08-27 16:20:25,896 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:20:25,897 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:20:25,897 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:20:25,897 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:20:25,897 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:19:01" (3/4) ... [2021-08-27 16:20:25,899 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:20:25,935 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:20:25,936 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:20:25,936 INFO L168 Benchmark]: Toolchain (without parser) took 85678.54 ms. Allocated memory was 52.4 MB in the beginning and 96.5 MB in the end (delta: 44.0 MB). Free memory was 28.7 MB in the beginning and 62.3 MB in the end (delta: -33.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-08-27 16:20:25,937 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 52.4 MB. Free memory was 34.6 MB in the beginning and 34.6 MB in the end (delta: 33.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:20:25,938 INFO L168 Benchmark]: CACSL2BoogieTranslator took 417.60 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 28.5 MB in the beginning and 40.0 MB in the end (delta: -11.5 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. [2021-08-27 16:20:25,938 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.87 ms. Allocated memory is still 62.9 MB. Free memory was 40.0 MB in the beginning and 36.5 MB in the end (delta: 3.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:20:25,938 INFO L168 Benchmark]: Boogie Preprocessor took 32.07 ms. Allocated memory is still 62.9 MB. Free memory was 36.5 MB in the beginning and 34.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:20:25,939 INFO L168 Benchmark]: RCFGBuilder took 876.93 ms. Allocated memory is still 62.9 MB. Free memory was 34.0 MB in the beginning and 36.2 MB in the end (delta: -2.3 MB). Peak memory consumption was 14.5 MB. Max. memory is 16.1 GB. [2021-08-27 16:20:25,939 INFO L168 Benchmark]: BuchiAutomizer took 84254.84 ms. Allocated memory was 62.9 MB in the beginning and 96.5 MB in the end (delta: 33.6 MB). Free memory was 36.2 MB in the beginning and 65.3 MB in the end (delta: -29.1 MB). Peak memory consumption was 57.4 MB. Max. memory is 16.1 GB. [2021-08-27 16:20:25,940 INFO L168 Benchmark]: Witness Printer took 38.94 ms. Allocated memory is still 96.5 MB. Free memory was 65.3 MB in the beginning and 62.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:20:25,942 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 52.4 MB. Free memory was 34.6 MB in the beginning and 34.6 MB in the end (delta: 33.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 417.60 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 28.5 MB in the beginning and 40.0 MB in the end (delta: -11.5 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.87 ms. Allocated memory is still 62.9 MB. Free memory was 40.0 MB in the beginning and 36.5 MB in the end (delta: 3.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.07 ms. Allocated memory is still 62.9 MB. Free memory was 36.5 MB in the beginning and 34.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 876.93 ms. Allocated memory is still 62.9 MB. Free memory was 34.0 MB in the beginning and 36.2 MB in the end (delta: -2.3 MB). Peak memory consumption was 14.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 84254.84 ms. Allocated memory was 62.9 MB in the beginning and 96.5 MB in the end (delta: 33.6 MB). Free memory was 36.2 MB in the beginning and 65.3 MB in the end (delta: -29.1 MB). Peak memory consumption was 57.4 MB. Max. memory is 16.1 GB. * Witness Printer took 38.94 ms. Allocated memory is still 96.5 MB. Free memory was 65.3 MB in the beginning and 62.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (2 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.2 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 293 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 84.1s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 83.7s. Construction of modules took 0.1s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 41.9ms AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 293 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 324 SDtfs, 271 SDslu, 224 SDs, 0 SdLazy, 41 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 120.7ms Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 392]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=30936} State at position 1 is {NULL=0, NULL=0, NULL=30941, NULL=0, NULL=30936, NULL=30956, NULL=0, NULL=30963, retValue_acc=1, methaneLevelCritical=0, tmp=0, NULL=30945, tmp___1=0, NULL=30946, retValue_acc=0, NULL=30949, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3c917d94=0, cleanupTimeShifts=4, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2e799832=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5865d486=0, NULL=30943, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@293fa3b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3506b802=72, waterLevel=1, NULL=0, NULL=30944, \result=1, retValue_acc=1, head=0, pumpRunning=0, NULL=30959, retValue_acc=1, NULL=0, NULL=0, NULL=0, tmp=1, \result=1, NULL=30962, NULL=0, NULL=0, NULL=0, NULL=0, tmp=1, tmp___0=0, tmp=1, NULL=30958, tmp=0, head=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2af76187=0, NULL=30950, NULL=0, NULL=30953, NULL=0, NULL=0, NULL=30954, NULL=30957, NULL=30940, tmp___0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@22f991c9=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@440c7417=0, NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5487abdb=0, tmp=0, NULL=30955, NULL=30951, tmp___0=0, NULL=0, NULL=0, NULL=0, NULL=0, systemActive=1, NULL=30961, \result=1, NULL=0, NULL=30942, \result=0, NULL=0, retValue_acc=0, NULL=30937, \result=0, NULL=30948, NULL=0, NULL=30952, NULL=30938, tmp___2=72, splverifierCounter=0, NULL=0, NULL=30939, NULL=30960, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4fb64bf=0, NULL=30947, NULL=30964} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L50] int waterLevel = 1; [L51] int methaneLevelCritical = 0; [L160] int pumpRunning = 0; [L161] int systemActive = 1; [L620] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L817] int cleanupTimeShifts = 4; [L893] int retValue_acc ; [L894] int tmp ; [L942] int retValue_acc ; [L945] retValue_acc = 1 [L946] return (retValue_acc); [L900] tmp = valid_product() [L902] COND TRUE \read(tmp) [L383] int splverifierCounter ; [L384] int tmp ; [L385] int tmp___0 ; [L386] int tmp___1 ; [L387] int tmp___2 ; [L390] splverifierCounter = 0 Loop: [L392] COND TRUE 1 [L394] COND TRUE splverifierCounter < 4 [L400] tmp = __VERIFIER_nondet_int() [L402] COND FALSE !(\read(tmp)) [L410] tmp___0 = __VERIFIER_nondet_int() [L412] COND FALSE !(\read(tmp___0)) [L420] tmp___2 = __VERIFIER_nondet_int() [L422] COND TRUE \read(tmp___2) [L376] systemActive = 1 [L168] COND FALSE !(\read(pumpRunning)) [L175] COND TRUE \read(systemActive) [L223] int tmp ; [L226] COND FALSE !(\read(pumpRunning)) [L197] int tmp ; [L200] COND TRUE ! pumpRunning [L320] int retValue_acc ; [L321] int tmp ; [L322] int tmp___0 ; [L130] int retValue_acc ; [L133] COND TRUE waterLevel < 2 [L134] retValue_acc = 1 [L135] return (retValue_acc); [L326] tmp = isHighWaterSensorDry() [L328] COND TRUE \read(tmp) [L329] tmp___0 = 0 [L333] retValue_acc = tmp___0 [L334] return (retValue_acc); [L202] tmp = isHighWaterLevel() [L204] COND FALSE !(\read(tmp)) [L961] int tmp ; [L962] int tmp___0 ; [L121] int retValue_acc ; [L124] retValue_acc = waterLevel [L125] return (retValue_acc); [L966] tmp = getWaterLevel() [L968] COND FALSE !(tmp == 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:20:25,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...